[CLOSED] NanoFury NF1 USB stick - Group Buy + Product Assembly

[MAREKU]

Hi vs3,
I would order between 10 and 20- fully asssembled NF1 USB sticks, but i will wait to place the order until the end of september.
If you send them from Europe that would be great, because we would save taxes and Import fees (u never know  )
So when next weekend or next week you got more final informations, then i know how much i will order. 

[bigbeninlondon]

Hey vs3;

PM'd.  Let me know if you need anything additional.

[nemercry]

I'm also in for 5 Units at .4 BTC.
At .3 BTC i would buy a lot more.
Shipped to Europe.

[Stinky_Pete]

I'd buy a few in Europe.

[vs3]

Hey vs3;

PM'd.  Let me know if you need anything additional.

Replied to PM (earlier today). All is good.

[vs3]

Thanks for the interest folks!

Please don't forget to place your preorders!

On October 1 we'll be counting PLACED orders. "Promised" will not be considered.

The more chips we get the cheaper they'll be. If we reach 3000 chips we can just buy a whole reel (at $30/chip) which will bring the price down significantly! Currently our biggest expense is the bitfury chips.

Presuming we hit the 3000 mark that would give us chips at 0.2-0.25BTC and the other components with assembly will likely be around 0.15-0.2BTC for a total price of 0.35-0.45BTC (depending also on the $/BTC exchange rate).

[Istie]

What if I place an order before 1 okt (stage 1).
For now it seems a Pre-order costs 0.4BTC per NF1 device.

If at 3 okt the final prices goes up I have to pay extra.

But if the price goes down, say 0.3BTC
Do I get more devices or for the btc I already paid? Settle it with the shipping costs?
Or are you giving a refund for the remaining btc?

[MAREKU]

vs3 can you give us an overview, how many units are allready ordered?
thanx 

[vs3]

What if I place an order before 1 okt (stage 1).
For now it seems a Pre-order costs 0.4BTC per NF1 device.

If at 3 okt the final prices goes up I have to pay extra.

But if the price goes down, say 0.3BTC
Do I get more devices or for the btc I already paid? Settle it with the shipping costs?
Or are you giving a refund for the remaining btc?

As per the opening post the plan (at least for the moment) is to:

* If final prince ends up being less than your initial deposit we’ll refund the BTC difference.

[blitzwilli1]

I would like to have 5 pieces

[vs3]

vs3 can you give us an overview, how many units are allready ordered?
thanx 

Confirmed orders are just about a hundred devices. Pending confirmation are another few hundreds (but I'm not going to count those until they become confirmed).
"Promised" with a bunch of "if" and "when", and "I'm interested" and "I will get X many" are over a thousand so far (which I'm not going to count either unless they do become confirmed).

[vs3]

We got some boards today!



Aaaaaand it seems to be one of our better screw-ups

hint: look at the USB connector pins ....


/running for paint thinner now

[doxavg]

Board looks nice, question though.  I know for most of us running these thumbs it likely won't matter much as they'll be vertically mounted and fan cooled, but why are the heatsinks on the NF1 and the ASICMiner thumbs on the bottom?  I understand why they aren't on the chip itself, but it seems weird to me that with heat prone to rising, the design has the heatsinks below the thing that they cooling.  It's been bugging me since I bought my first BE and plugged it in seemingly upside down to a USB port on my laptop before eventually moving it to a hub (and Pi) after getting it a brother.  Anyway, just a question from a curious person with no more money to buy cool looking products

[vs3]

(...) why are the heatsinks on the NF1 and the ASICMiner thumbs on the bottom?

That's due to the chip design. Most desktop CPUs are designed to dissipate heat through the packaging - so the packaging material for them is metal. But that's very expensive.

The cheapest chip package is plastic, which unfortunately isn't very good conductor of heat. To get around that they used the fact that usually the silicon crystal is first mounted on a metal base, and then the whole thing is covered in plastic (to put it a bit overly simplified). So they ended up with the metal bit that gets the most heat out underneath the chip.

In that case in order to move the heat away from the chip you need to channel it literally through the board towards the back of the board (using numerous "via"s or holes which itself are copper plated and usually during the soldering process get filled in with tin or whatever the soldering material). On the back a large copper plane acts as a heat sink. Or you can add an additional heat sink on top of it.

So if you look at it from a 3D prospective it looks like small heat pipes (the tin-filled vias) that connect the chip to the heatsink. Probably not the most efficient way but certainly cheap

[doxavg]

Thanks for the quick reply, I think I missed something in the wording of my question.  I understood (for the most part - the extra detail was much appreciated) why the heat was dissipated from the back of the board.  I was looking more to understand why the traces for the USB power were on that side of the board and not on the side with the components.  After actually checking the traces again, I realized that you did design your board opposite what ASICMiner did and the heat sink will actually face up when plugged in (at least on the two machines I have in front of me).

[vs3]

Thanks for the quick reply, I think I missed something in the wording of my question.  I understood (for the most part - the extra detail was much appreciated) why the heat was dissipated from the back of the board.  I was looking more to understand why the traces for the USB power were on that side of the board and not on the side with the components.  After actually checking the traces again, I realized that you did design your board opposite what ASICMiner did and the heat sink will actually face up when plugged in (at least on the two machines I have in front of me).

Ah ..

The board was initially designed to have the exact same physical dimensions ad BKKCoin's K1 Nano board (so that we can use the same heatsink, plastics, etc). And he had put the USB connector (tracks) on the back, so we just kept it the same. That was probably not necessary but since it didn't hurt either we just left it there and moved on.

Either way - a lot of things happened in the mean time, and with the Avalon fiasco the whole Klondike project development has grinded to a halt. We also got updated quotes for the board manufacturing, and we either have to have those those tracks gold-plated (so that they don't corrode and oxidize) or if we leave them tin-covered it is likely that after a few months to a year they may start having connectivity issues (and you'll have to clean the contacts, etc).  So ... as a result in the next version of the board we're going to replace the USB connector and instead of a printed one on the board (although a bit cheaper) we're going to use a real one.

[marto74]

Thanks for the quick reply, I think I missed something in the wording of my question.  I understood (for the most part - the extra detail was much appreciated) why the heat was dissipated from the back of the board.  I was looking more to understand why the traces for the USB power were on that side of the board and not on the side with the components.  After actually checking the traces again, I realized that you did design your board opposite what ASICMiner did and the heat sink will actually face up when plugged in (at least on the two machines I have in front of me).

Ah ..

The board was initially designed to have the exact same physical dimensions ad BKKCoin's K1 Nano board (so that we can use the same heatsink, plastics, etc). And he had put the USB connector (tracks) on the back, so we just kept it the same. That was probably not necessary but since it didn't hurt either we just left it there and moved on.

Either way - a lot of things happened in the mean time, and with the Avalon fiasco the whole Klondike project development has grinded to a halt. We also got updated quotes for the board manufacturing, and we either have to have those those tracks gold-plated (so that they don't corrode and oxidize) or if we leave them tin-covered it is likely that after a few months to a year they may start having connectivity issues (and you'll have to clean the contacts, etc).  So ... as a result in the next version of the board we're going to replace the USB connector and instead of a printed one on the board (although a bit cheaper) we're going to use a real one.

Hi,
Some info.
Generally you can ask PCB shop to cover contacts with so called "hard " gold plating in order to have this pins long lasting.
Also to if you do not use additional pad the board have to be 2 mm +/- 0.05 mm.
This is the USB connector spec

[nemercry]

Interested in 5-10 Fully Assembled NF1 plug&play units @.4 maybe more @.3

Do you ship to Europe as well?
What are the shipping costs for international orders? 0.1?
How many pre-orders are placed?
I'm looking forward to see your video/pics

Yes, we will be shipping to Europe. We're also working on setting up a manufacturing point and distribution in Europe (to also cover for such orders).

Maybe you can join forces with marto74. He deals with EU customers and really proofed his skills with his hex board.
Would be good to see someone handy around. You just need to ensure that you can keep your low margin, otherwise the only incentive on this product which is reselling wont be possible.
Most of the people buying here are probably resellers, with extreme little margin.

[itod]

Also to if you do not use additional pad the board have to be 2 mm +/- 0.05 mm.

This is very important, majority of PCB's manufactured today have lesser thickness (around 1.6mm), so you have to use pads for them to sit firmly in the USB port, witch is major pain in the a**. Don't forget to ask for a 2mm PCB from your supplier.

[philipma1957]

Interested in 5-10 Fully Assembled NF1 plug&play units @.4 maybe more @.3

Do you ship to Europe as well?
What are the shipping costs for international orders? 0.1?
How many pre-orders are placed?
I'm looking forward to see your video/pics

Yes, we will be shipping to Europe. We're also working on setting up a manufacturing point and distribution in Europe (to also cover for such orders).

Maybe you can join forces with marto74. He deals with EU customers and really proofed his skills with his hex board.
Would be good to see someone handy around. You just need to ensure that you can keep your low margin, otherwise the only incentive on this product which is reselling wont be possible.
Most of the people buying here are probably resellers, with extreme little margin.

 I have a lot of interest from former AM stick buyers.  If I buy I would sell 60-70% at a small markup  keeping the rest for myself. Right now there is a second seller of sticks like these.  His would come 20 to 30 days sooner.  Of course they cost more.   I am mulling over whom to choose. I may buy some from both.